Folding knife



FIG. 1 is a left side view of the folding knife.

FIG. 2 is a right side view of the folding knife.

FIG. 3 is a top side view of the folding knife.

FIG. 4 is a bottom side view of the folding knife.

FIG. 5 is a front view of the folding knife; and,

FIG. 6 is a rear view of the folding knife.

The shading lines shown in the drawings represent the approximate three-dimensional contour of the design, and are not intended to indicate surface decoration.

The broken lines depict portions of the folding knife in which the design is embodied that are not considered part of the claimed design. 

CLAIM We claim the ornamental design for a folding knife, as shown and described. 